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Note 44 Personnel Expenses Breakdown (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Personnel expenses [Line Items]      
Wages and salaries € 3,933 € 3,610 € 4,103
Social security contributions 668 671 725
Post-employment benefit expense, defined contribution plans 71 72 95
Post-employment benefit expense, defined benefit plans 49 49 49
Other employee expense 325 293 379
Employee benefits expense € 5,046 € 4,695 € 5,351